- Because of the anti-insulin effects of placental hormones, insulin requirements increase during the third trimester.
- Gestational age can be estimated by ultrasound measurement of maternal abdominal circumference, fetal femur length, and fetal head size. These measurements are most accurate between 12 and 18 weeks’ gestation.
- Gestational age can be estimated by ultrasound measurement of maternal abdominal circumference, fetal femur length, and fetal head size. These measurements are most accurate between 12 and 18 weeks’ gestation.